CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 2,2008, Pages 143-144, doi:10.3760/cma.j.issn.1007-9408.2008.02.021
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 2,2008, Pages 101-106, doi:10.3760/cma.j.issn.1007-9408.2008.02.007
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 2,2008, Pages 123-125, doi:10.3760/cma.j.issn.1007-9408.2008.02.013
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 2,2008, Pages 86-90, doi:10.3760/cma.j.issn.1007-9408.2008.02.004
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 2,2008, Pages 73-77, doi:10.3760/cma.j.issn.1007-9408.2008.02.001